CVE-2026-21640 is a low severity vulnerability with a CVSS score of 0.0. No known public exploits at this time.
Please cite this page when referencing data from Strobes VI. Proper attribution helps support our vulnerability intelligence research.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.